<![CDATA[Physics learning on special relativity material faces challenges due to its abstract, difficult-to-visualize concepts, while conventional Student Worksheets remain dominant in schools. This study aims to develop a digital LKPD based on the Wizer.me platform for special relativity material and to analyze user responses to the developed media. This study uses a research and development (R&D) method with a 4D model, focusing on the development stage. The research subjects involved two expert validators, one physics teacher, and 45 high school students. The research instruments were in the form of expert validation sheets and user response questionnaires, with descriptive quantitative data analysis. The results showed that the developed digital LKPD has a very high level of validity, with an average validity index of 1.00, and is therefore suitable for use as a learning medium. In addition, user responses showed positive acceptance, indicated by the percentage of teacher responses of 87.3% (positive category) and student responses, which were dominated by the very positive category of 77.8%. These findings indicate that Wizer. me-based digital worksheets are practical, engaging, and relevant to support special relativity learning. Further research is recommended to examine the effectiveness of digital worksheets in improving students' conceptual understanding or learning outcomes through experimental research designs and to develop their application to other abstract physics materials and broader school contexts.]]>
